HARDY HERBACEOUS PERENNIALS 
PHYSOSTEGIA — FALSE 
DRAGONHEAD 
PHYSOSTEGIA virginiana gigantea. 4-5 ft. 
July-September. Mauve-pink. 
P. virginiana rosea. 3 ft. New rose-colored vari¬ 
ety. Rare. 
P. virginiana rubra. 2-3 ft. July-September. 
Rosy flowers. 
P. virginiana, VIVID. 12 in. July-September. 
Very deep rose. 
PLATYCODON grandif 1 orum, BALLOON- 
FLOWER. 18-24 in. July-September. Deep 
blue. 
POGONIA—See ORCHIDS. 
POLYGONATUM commutatum, GREAT SOL- 
OMONSEAL. Arching spray of foliage, hung 
with white bells. 
SANGUINARIA canadensis, BLOODROOT. 8 
in. Lovely native herb, blooming in earliest 
Spring with snow-white flowers. 
SAPONARIA ocymoides, ROCK SOAPWORT. 
April-July. Creeping habit, bright pink flowers. 
SAXIFRAGA cordifolia, HEARTLEAF SAXI¬ 
FRAGE. 12-18 in. Large thick foliage and 
purple flowers in April-May. For rockeries. 
S. macnabiana. 12 in. May-June. White with 
red spots. 
SEDUM — STONECROP 
A most useful class of rock-garden ma¬ 
terial for ground covering and other pur¬ 
poses. Interesting in its variety of foliage, 
flower and effect of habits in growth. Un¬ 
usually fine list and true to name. 
SEDUM acre, GOLDMOSS. May-June. Yellow. 
S. aizoon, AIZOON STONECROP. Summer. 
Yellow to orange. From Japan. 
S. album, WHITE STONECROP. 8 in. Creep¬ 
ing evergreen mat with white flowers. Summer. 
S. borderi. 1 ft. Red-purple. Late Summer. 
S. ewersi, EWERS STONECROP. Low and half- 
trailing. Ruby-crimson. Flower stems to one 
foot. 
S. lydium, LYDIAN STONECROP. June. Needle¬ 
like foliage. Pink. 
S. reflexum, JENNY STONECROP. 9 in. June- 
July. Bright yellow. 
S. sexangulare, HEXAGON STONECROP.. 2. in. 
May-June. Similar to acre but more brilliant 
yellow. 
S. sieboldi, SIEBOLD STONECROP. Late Au- 
tumn. Pink. Glaucous-blue or red leaves. 
S. spectabile, SHOWY STONECROP• 1 ft. Aug¬ 
ust. Flat pink heads. 
S. spurium (oppositifolium), TWO-ROW 
STONECROP. Trailing. Pinkish white petals. 
Paired leaves, blunt tipped. Summer. 
S. stoloniferum, RUNNING STONECROP. 
Creeping, flesh-pink. Early Summer. 
S. stoloniferum coccineum, SCARLET RUN¬ 
NING STONECROP. Scarlet. Early Summer. 
[ 47 ] 
SEMPERVIVUM — HOUSELEEK 
SEMPERVIVUM arachnoideum, SPIDERWEB 
HOUSELEEK. 4-6 in. Bright red. Summer. 
S. comolli. 
S. tectorum, ROOF HOUSELEEK. 6-9 in. Pale 
red. Summer. 
SHORTIA galacifolia, OCONEE-BELLS. (See 
under BROADLEAF EVERGREENS). 
SILENE alpestris, ALPINE CATCHFLY. May- 
June. Masses of white flowers. Prefers moist 
location. 
STATICE 
STATICE caespitosa (Armeria caespitosa). 2 
in. Summer. Smallest variety. Pale rose flow¬ 
ers in heads barely lifted above the densely 
tufted cushions. $.40 each, $3.50 per 10. 
S. montana (Armeria alpina), MOUNTAIN 
THRIFT. 6 in. Summer. Deep rose flowers 
in % in. heads. Very choice. 
S. pseudoarmeria (Armeria cephalotes). 12 in. 
Summer. Bright pink flowers in 2 in. heads. 
S. pseudoarmeria rubra (Armeria cephalotes 
rubra). 12 in. Summer. Brighter flowers than 
preceding. 
STOKESIA laevis, CORNFLOWER. 1 % ft. 
Blue. July-October. 
TEUCRIUM chamaedrys, CHAMAEDRYS GER¬ 
MANDER. 1 ft. Bright green leaves and bright 
rose flowers in Fall. 
THALICTRUM polygamum, TALL MEADOW- 
RUE. 7 ft. July. Huge white clustered flower 
heads over showy foliage. 
THERMOPSIS 
THERMOPSIS caroliniana, CAROLINA 
THERMOPSIS. 4-6 ft. Long terminal spikes 
of bright yellow pea-shaped flowers in June 
or July. Splendid with Delphinium. 
THYME 
THYMUS serpyllum, MOTHER-OF-THYME. 
Prostrate. Flowers purplish. June-September. 
T. serpyllum album. Prostrate and creeping. 
White flowers. June to September. 
T. serpyllum coccineus, CRIMSON THYME. 
Prostrate. Crimson flowers. June-September. 
T. serpyllum lanuginosus, WOOLY THYME. 
Prostrate. Purple flowers. Grey woolly foliage. 
J une-September. 
T. vulgaris, COMMON THYME. 8-10 in. May- 
June. Lilac or purple flowers. 
TRADESCANTIA—SPIDERWORT 
TRADESCANTIA virginiana, VIRGINIA 
SPIDERWORT. 2-3 ft. All Summer. Broad 
grass-like foliage. Violet-blue flowers. 
T. virginiana alba, WHITE VIRGINIA SPIDER¬ 
WORT. 2-3 ft. All Summer. White. 
T. virginiana rosea, PINK VIRGINIA SPIDER¬ 
WORT. 2-3 ft. All summer. Pink. $.40 
each, $3.50 per 10. 
